JPS594125B2 - electronic jar rice cooker - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement of an electronic jar rice cooker, which is capable of cooking delicious rice by heating the rice from the outer bottom of the pot and transmitting the heat during cooking to the top of the lid.

Conventionally, when cooking rice in this type of rice cooker, heat was applied from the bottom of the pot and was transmitted by convection of water inside the pot, so heating was not applied from the top of the pot, and the lid acted as a cooling rather than an insulator. It had the disadvantage that the rice at the top of the pot could not be cooked properly.

The present invention solves these drawbacks by transmitting heat to the top surface of the lid and making it possible to heat from the top of the pot.

Hereinafter, one embodiment of the rice cooker of the present invention will be described with reference to the drawings.

In the figure, 1 is a rice cooker main body, the bottom of which is connected to a lower frame 2 by curling to form a cup-shaped main body.

A protective frame 3 is placed on the upper frame 4, and its upper edge is fixed to the upper frame 4 with screws.

The upper frame 4 is crimped into the upper part of the main body 1, and is molded from a resin filled with glass fiber or the like having low thermal conductivity.

5 is a heating element for cooking rice, and the outer bottom of the pot 6 is placed on this heating element 5.

A center thermostat 7 captures the temperature at the bottom of the pot 6 and operates the completed contact plate 25 through the rice cooking lever 24.

8 is a heat-retaining heating element attached to the upper part of the protective frame 3;
is an inner lid whose peripheral edge is placed on the upper edge step of the pot 6.

A steam cylinder 10 is attached to the inner lid 9 by caulking.

A guide lid 11 is placed over the steam cylinder 10, and receives viscous rice juice (sticky) from the pot 6 and returns it to the upper part of the inner lid 9 to prevent the outer lid from getting dirty.

Reference numeral 12 denotes an inner lid gasket, which is pressed against the lower part of the upper edge step of the pot 6 and serves to increase the internal pressure of the pot 6.

38 is a pressure regulating ball placed inside the steam cylinder 10 and serves to increase the pressure inside the pot 6.

Numeral 13 is a cushion rubber to which the inner cover 9 is attached, and presses the inner cover 9 with its elasticity.

An outer lid 14 covers the pot 6 and the inner lid 9 together with an outer lid cover 39.

Reference numeral 15 denotes an outer lid frame, which is an auxiliary material when assembling the outer lid 14 and the outer lid cover 39.

Reference numeral 16 denotes a pot outer circumferential gasket assembled between the outer lid frame 15 and the outer lid cover 39, and is pressed against the upper part of the upper edge step of the pot.

Normally, the inner lid packing 12, the cushion rubber 13, the guide tube 11, and the pot outer circumferential packing 16 are all made of elastic and heat-resistant silicone rubber.

17 is a hook lever, and the hook lever shaft 1 is attached to the outer lid frame 15.
It is attached by 9.

18 is a biasing spring for the hook lever 17.

A buckle 20 has a claw for hooking the hook lever 17.

By fitting the outer cover 14 and the inner cover 9 with the hook lever 17, these are closed and locked.

Reference numeral 21 denotes a hinge to which the outer cover 14 is attached by a hinge shaft 22, and is rotated by releasing the lock of the hook lever 17 from the buckle 20 to open and close the cover.

23 is a dew pan that prevents dew condensed on the inner lid 9 from falling onto the floor.

40 is the heat insulating material for the lid, 31 is the heating element for the lid glued to the outer lid cover 39, and 32 is the inner lid 9 glue 2 rubber 13.
The lid attachment of the reservoir is attached to the central part of the cover 39 through the shaft.

Furthermore, 27 is a display plate, which is attached to the main body 1 with attachment screws 29.

28 is a display lamp, and 26 is a rice cooking button attached to the tip of the rice cooking lever 24.

30 is a cord reel attached to the bottom of the main body 1, 33
635 is the main body side insulation material, 33 is the main body bottom insulation material
is an outer lid bundle cover, and 36 is a leg.

37 is a back plate incorporating the cord reel 30, and 41 is a thermal reed switch incorporated into the side surface of the protective frame 3.

And A is formed at the top of the upper edge step of the pot 6/J4
It communicates with the inner bottom surface of the rice cooker main body 1 at L.

Next, to explain the operating procedure of this rice cooker, the rice cooking button 2
6 is pressed, the rice cooking lever 24 is held upward by the suction force of the thermostat 7.

At this time, the completed contact plate 25 is turned on, and the rice cooking heating element 5 is energized to heat the pot 6.

The temperature of the rice and water in the pot 6 rises, and when the rice is cooked, the temperature at the bottom of the pot 6 rises, and the thermostat 7 operates to push the rice cooking lever 24 downward and the completed contact plate 2
The contact point 5 is turned off, the heating element 5 for cooking rice is connected in series with the heating element 8 for keeping warm, and the mode shifts to keeping warm.

The feature of this embodiment is that during rice cooking, the bottom of the pot to which the heat from the heating element 5 for rice cooking is transferred has the highest temperature, but the bottom part of the pot has the highest temperature. Since the heating is carried out by convection through the small hole A to the upper surface of the inner lid 9, the entire pot 6 can be heated, and the rice in the pot can be cooked evenly.

Since the inner lid 9 and the outer lid cover 39 are pressed against the pot 6 via the inner lid packing 12 and the pot outer circumference packing 16, respectively, the hot air flowing in from /J4LA effectively heats the upper surface of the pot 6. can do.

Furthermore, since the inner lid gasket 12 seals the pot 6 and the inner lid 9, it is difficult for slime to leak out, and even if it still leaks, the slime will accumulate at the lower part of the upper edge step of the pot 6, so the small hole A It does not flow into the rice cooker main body 1.

As explained above, according to the present invention, it is possible to effectively heat the entire pot and cook rice evenly,
To provide an electronic jar rice cooker that can be used cleanly for a long period of time without allowing slime or the like to flow into the rice cooker main body.

[Brief explanation of the drawing]

The figure is a sectional view of a rice cooker according to an embodiment of the present invention. 1...Rice cooker body, 3...Protection frame, 4
... Upper frame, 5 ... Heating element for rice cooking, 6.
... Pot, 7 ... Center thermostat, 8 ... Heating element for heat retention, 9 ... Inner lid,
16...Pot outer circumference seal, A...Small hole.

Claims (1)

[Claims] 1. A heating element for cooking rice is provided on the inner bottom of the rice cooker body, and a heating element for heat retention is provided on the top of the protective frame of the main body, and the periphery of the top surface of the pot is placed on the upper frame attached above the protective frame. , is pressed by the pot outer circumferential packing attached to the outer lid cover and the inner lid packing provided on the inner lid, and the outer circumferential portion of the pot has a space between the suppressing part by the pot outer circumferential packing and the pressing part by the inner lid packing. The electronic jar rice cooker is provided with a stepped portion, and a small hole communicating with the inner bottom surface of the main body is provided at the top of the stepped portion.